Heater tank assembly



April 26, 1938. F. w. OFELDT HEATER TANK ASSEMBLY Filed July 18, 1936INVENTOR.

Patented Apr. 26, 1938" x UNITED s'rA'rEs PATIENT OFFICE Homestead ValveMannheim-in: Company,

Coraopolis, Pa. a corporation or Pennsyl Application July 1a, 1936,Serial No. 91,406

' 2 Claims. ((1126-350) This invention relates generally to tankstructures for heating fluids.

An important characteristic of my invention is the provision of meansfor including in a 5 common outer enclosure or tank a combustionchamber, a compartment for storing a supply oi the fluid or fluids to beheated, and a fuel supply compartment.

itnother characteristic is the provision of a to compact andconveniently portable structure width may be advantageously employedi'or many purposes for which a heated liquid is reouired, as forinstance in various cleansing anti/or spraying operations. l5 hnothercharacteristic oi my invention is' the provimon of such a tank assemblywhich is ar ranzerl both for preheating the liquid to he heated byproximity to the combustion chamber, and for the heat-insulation oi thesupply oi incl by the interposition oi the lluid to be heated betweenthe loci storage compartment and the combustion chamber.

.Another characteristic is the provision oi means for heat-insulatingthe upperend of the incl compartment, preferably by extending thecompartment for the liquid to be heated over the top oi the iuelcompartment.

Other objects and novel features of construction, and also ofarrangement of parts, will apm pear irom the following description. r

in the accompanying-drawing, wherein I'have illustrated a practicalembodiment of the principles of my invention:

l lo. i is a plan view of a heater tank assem- 35 bly constructed inaccordance with my present invention.

Fig. 2 is a vertical section of the heater tank structure. I

Referring to the drawing, i represents a tanlr 40 preferably constructedin cylindrical term and having the elevated floor l which forms theupper and lower compartments 3 end i. The upper compt 3 of the tank iis-subdivided into three chambers, the combustion chamber 5, the itfluid chamber and the fuel chamber..

The combustion chamber 8 is preferably cylinclrlcal in shape andpositioned eccentrically 'ot the tank i but in spaced relation with theperimetral wall the latter. The bottom oi the comso bustion chamberrests on the "floor 2 and is secured thereto by a fluid-tight, sealedjoint, as by welding, as indicated at t. The combustion chamber may besupported by braces 1 extending inwardly from the perimetrai wall of thetank l. as The interior of the tank i surrounding the combustion chamber5 forms the compartment 8, for the storage or the supply of the fluid tobe heated.

t represents a incl-compartment iormed by a vertical partition it, whichforms the cord of 5 an arc oi the perimetral wall of the tank i, by thearcuate portion of the said wall, the floor i2 and the top closure ii.The partition it is spaced i'rom' the perlmetrol wall of the combustionchamber t and one oi the braces i may be m interposed between the same.

it represents a liquid supply pipe extending up through a sealed port inthe floor 2 and within the fluid compartment t to a point adjacent tothe top oi the latter, and it represents a valve is on the upper end ofsaid pipe controlled by the float it which is operated by the level oilthe liquid in compartment t, thus maintaii constant level of the fluidin said compartment, as indicated.

As illustrated, the top ll oi the fuel compartment t is materially belowthe normal level oi the liquid in compartment t.

Thus at all times a body oi this liquid is interposed between thecombustion chamber and the m5 iuel comrtment, thus preventingsignificant heat-transference to the lucl which would ceneratedangerously explosive cases in the fuel compartment.

Further insulation tor the iuel tank is provided by the liquid overlyingthe top of the fuel compartment, thus preventing heat-transferencethrough the air above the body of fluid in the compartment a.

There is also a consertaflon oi. heat energy by surrounding thecombustion chamber with the liquid to be heated.

it represents a throat connecting with the interior of the iueicompartment tor filling the same.

it represents the port connection through the floor i forwithdrawing'iuel from the compartment 9 tor the burner. ll represents asimilar port in the bottom of the compartment 0 for the withdrawal oithe liquid to be heated. 5

it represents a bracket or other support depending irom the floor 2within the compartment t. Upon this support the fuel and liquid pumpsare mounted. The fuel burner, indicated at Ilia, is supported by thefloor I and is centered in an annular opening I! at the bottom of thecombustion chamber I. Any suitable type 0! burner may be employed, such,for instance, as is illustrated in my co-pending patent applicationSerial No. 88,106, filed June 30, 1986. Inasmuch as the structure of thefuel and liquid pumps, the burner and the coil or other heat-transfermeans within the combustion chamber, are not per se a part of thesubject matter of the present application, the same are not shown.Suitable structures for these purposes are shown and described in mypending patent applications as follows, Serial No. 87,847, filed June29, 1936; Serial No. 91,405 filed July 18, 1936, and Serial No. 88,106filed June 30, 1936.

20 represents a frame secured to the lower end of the tank I upon whichare mounted the traction wheels 2|. 22 represents a handle or tongue forconveniently moving the portable assembly from place to place.

The lower portion 23 of the tongue 22 is e tended downwardly to form aleg to support the assembly when stationary.

I claim:-

1. In a heater tank assembly, the combination of an outer enclosuretank, a floor in said tank, a combustion chamber mounted on the floorwithin said tank, a fuel burner associated with the combustion chamber,a fuel compartment formed by a partition and top with the floor and sidewall of said tank, said partition spaced from the wall of the combustionchamber, and a, compartment formed by the partition and top of the fueltank, the wall and the floor of the enclosure tank and the wall of thecombustion chamber for storing the liquid to be heated.

2. In a heater tank assembly, the combination of an outer enclosuretank, a combustion chamber constructed within said tank, a fuel burnerassociated with the combustion chamber, a fuel compartment formed by apartition and top wall with the wall of said tank, said fuel compartment.being spaced from the combustion chamber,

and a compartment formed between the fuel

